William h



(No Model.)

W. H. PAGKHAM.

DAMPER.

iii

I Fay. 5.

WITNESSES: l/Vl/E/VTOI? %%CM wwzwezwj 6. 25% M 4mm 76 AT TORNEYS.

UNITED STATES PATENT OFFICE.

WILLIAM H. PACKHAM, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO WILLIAM H. BRIGHT, OF SAME PLACE.

DAMPER.

SPECIFICATION forming part of Letters Patent No. 485,053, dated October 25, 1892.

Application filed August 4, 1891- Serial No. 401,680. (No model.)

To all whom it mag concern.- place, and consequently the damper will be Be it known that I, WILLIAM H. PACKHAM, cheapened in this respect. of Buffalo, in the county of Erie and State of A spiral spring 19 is coiled around the 55 New York, have invented a new and Imrounded surface 16 of the damper-shank, and proved Damper, of which the following is a this spring is compressed between the shoulfull, clear, and exact description. der 16 and the pipe 14. To insert the shank My invention is an improvement in that in the dainperplate, it is simply pushed class of stovepipe-dampers which are so conthrongh the slideway formed by the oppo- 6o structed that the plate or disk composingthe sitely-arranged lugs 11, and when the damper IO damper proper is drawn laterally or edgeis in position in a pipe the pressure of the Wise byspring-pressure into frictional conspring 19 will tend to withdraw the dampertact with the inner side of the pipe and is shank, and consequently the damper-plate 10 thus held, so that it will remain fixed at any Will be pressed firinlyinto the recess 15. The 65 angle at which it may be adjusted. damper-plate will thus he always in place and [5 To this end my invention consists in cercannot by any possibility get loose.

tain features of construction and combina- The damper-plate is struck up out of sheet tions of parts, which will be hereinafter de-' metal, and the construction of the shank and scribed and claimed. its easy means of attachment to the damper- 70 Reference is to be had to the accompanying plate renders the complete damper extremely 2o drawings, forming apart of this specification, cheap, and it is also very efficient. The lug in which similar figures of reference indicate formed by recessing the shank at overcorresponding parts in all the views. hangs the pheripheral edge of the disk, and,

Figurelisaplan viewof thedamper,showbeing under the action of the spring, the 5 ing it in position in a pipe. Fig. 2 is a crosslug is locked to the disk at all times, even section of the damper, taken on a line parallel against the tendency to become disengaged with the damper-shank. Fig. 3 is a broken by the warping of the disk. crosssection on the line 3 3 in Fig. 2, looking Having thus described myinvention,lclaim in the direction of the arrow; and Fig. 4 is as new and desire to secure by Letters Pat- So an enlarged detail perspective view of the cut-- damper-shank. As a new article of manufacture, the herein- The damper-plate 10 is shaped to fit the described damper, consisting of the damperpipe in which itis to be used, and itis provided disk having a slideway produced centrally centrally with lugs 11, which are pressed altherein, the shank 12, having at one end a 85 ternately from opposite sides of the damper, stud forming a journal for one end thereof 3; so as to form a slideway to receive the shank and recessed, as at 15, adjacent to the stud, 12, which shank has one end arranged to prosaid recess forming an integral overhanging ject beyond the damper-plate, said end being lug or hook adapted to overlie the peripheral reduced, as shown at. 13, so that it will fit an edge of the damper-disk received in the re- 90 aperture in the pipe 14. Near the reduced cess, the opposite end of the shank having a end of the damper-shank 12 is a recess 15, suitable handle and formed with a shoulder, which is produced on one side of the shank and a coiled spring on the handle end of the and is adapted to receive an edge of the shank, normally tending to press the overdamper-plate. Near the opposite end the hanging lug at the recessed end of the shank 5 shank 12 is enlarged and rounded, as shown into engagement with the peripheral edge of at 16, so as to produce a suitable bearing-surthe disk, thereby serving to maintain the enface, and this rounded surface ends inashoulgagement of such lug irrespective of any der 16, which separates said rounded surface warping of the disk, substantially as defrom the clasp 17, which is madeof malleable scribed.

metal, and has two parallel arms which are \VILLIAM I-I. PAOKHAM. adapted to be pressed around the handle 18. Witnesses:

It will thus be seen that no screws or rivets SEWARD A. SIMONS,

will be necessary to secure the handle in M. G. POTTER. 

